The 4th Division is an infantry formation of the Iraqi Army. It was formed before 1941, disbanded in 2003, but reactivated after 2004.It was one of the four original divisions of the Iraqi Army, being active in 1941. At the beginning of the Anglo-Iraqi War it was in Al Diwaniyah on the main rail line from Baghdad to Basra. Before the 2003 invasion of Iraq it was part of the V Corps in northern Iraq, alongside the 1st Mechanised Division.